tty: Fix close races in USB serial

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USB serial has always had races where the tty port usage count can hit zero
during a receive event. The internal locking is a mutex so we can't use
that in the IRQ handlers.

With krefs we can tackle this differently but we still need to be careful.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Alan Cox 2009-01-02 13:44:04 +00:00 • committed by Linus Torvalds

parent 7e94b1d9bf

commit 4bd43f2c31

1 changed files with 10 additions and 5 deletions

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drivers/usb/serial/usb-serial.c

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